X0508 4 2026-03-01 0001361538 Primoris Services Corp PRIM 0001358632 Stricker Travis C/O PRIMORIS SERVICES CORPORATION 2300 NORTH FIELD STREET, SUITE 1900 DALLAS TX 75201 false true false false CAO 0 Common Stock 2026-03-01 4 M 0 4758 A 11229 D Common Stock 2026-03-01 4 A 0 2613 A 13842 D Common Stock 2026-03-01 4 F 0 2904 150.72 D 10938 D Restricted Stock Units 2026-03-01 4 M 0 4758 0 D Common Stock 4758 2267 D Restricted Stock Units 2026-03-01 4 A 0 930 0 A Common Stock 930 3197 D Each restricted stock unit represents a contingent right to receive one share of PRIM common stock or the cash value thereof on the date of settlement, in the Company's discretion. On March 1, 2026, the restricted stock units vested and were settled for an equal number of shares of PRIM common stock. These shares represent the acquisition of common stock resulting from the vesting of earned performance stock units issued under an equity incentive plan of the Company. Withholding of common stock to satisfy reporting person's tax obligation upon the settlement of vested restricted stock units and performance stock units. Each restricted stock unit represents a contingent right to receive one share of PRIM common stock or the cash value thereof on the date of settlement, in the Company's discretion. The restricted stock units vest 25% on March 1, 2027, 25% on March 1, 2028, and 50% on March 1, 2029. /s/ Kenneth M. Dodgen, Attorney-in-Fact 2026-03-03